package de.klenkse.eclipse.ftpsync;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.IStartup;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

import de.klenkse.eclipse.ftpsync.synchronizer.SynchronizationManager;

/**
 * The activator class controls the plug-in life cycle
 */
public class Activator extends AbstractUIPlugin implements IStartup {

	/** The plugin id */
	public static final String PLUGIN_ID = "de.klenkse.eclipse.ftpsync";

	/** The shared instance */
	private static Activator plugin;

	/**
	 * The constructor
	 */
	public Activator() {
		// nothing to do here
	}

	/** The synchronization manager. */
	private SynchronizationManager synchronizer;

	/** Initialize the synchronization manager. */
	public void initializeSynchronization() {
		synchronizer = new SynchronizationManager();
		for (IProject project : ResourcesPlugin.getWorkspace().getRoot()
				.getProjects()) {
			IResource configFile = project.findMember("ftpsyncconfig.cnf");
			if (configFile == null || !(configFile instanceof IFile)) {
				continue;
			}
			synchronizer.addConfigFile((IFile) configFile);
		}
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void start(BundleContext context) throws Exception {
		super.start(context);
		plugin = this;
		initializeSynchronization();
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void stop(BundleContext context) throws Exception {
		plugin = null;
		super.stop(context);
		synchronizer.shutdown();
		synchronizer = null;
	}

	/**
	 * Returns the shared instance
	 * 
	 * @return the shared instance
	 */
	public static Activator getDefault() {
		return plugin;
	}

	/**
	 * Returns an image descriptor for the image file at the given plug-in
	 * relative path
	 * 
	 * @param path
	 *            the path
	 * @return the image descriptor
	 */
	public static ImageDescriptor getImageDescriptor(String path) {
		return imageDescriptorFromPlugin(PLUGIN_ID, path);
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void earlyStartup() {
		// do nothing, just let the plugin start regularly
	}

}
